diff --git a/Gemfile.lock b/Gemfile.lock
index 48af3e7c..cbeaf488 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -397,7 +397,7 @@ GEM
     logging (2.2.2)
       little-plugger (~> 1.1)
       multi_json (~> 1.10)
-    loofah (2.16.0)
+    loofah (2.18.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
@@ -428,7 +428,7 @@ GEM
     netrc (0.11.0)
     nio4r (2.5.8)
     noid (0.9.0)
-    nokogiri (1.13.4)
+    nokogiri (1.13.6)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     oauth (0.5.4)
@@ -486,7 +486,7 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.4.2)
+    rails-html-sanitizer (1.4.3)
       loofah (~> 2.3)
     rails_autolink (1.1.6)
       rails (> 3.1)